Malicious PDF — malware analysis report

Static analysis result for SHA-256 433c0dd693ad2222…

MALICIOUS

PDF

34.7 KB Created: 2020-10-02 08:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: aaa9beeee0c484b046bb71df253aa260 SHA-1: 693b9353c0432cd74184a7cf130a555d5ce23127 SHA-256: 433c0dd693ad2222c5c8578e7faeeb9b987c8e88c8227cf9c12912aa65babe7c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=isuzu+4hk1+engine+manual In PDF document text
    • http://bufipu.darrennixon.com/uploads/1/3/0/8/130814179/b3f599.pdfIn PDF document text
    • http://files.lauraduggantherapy.com/uploads/1/3/2/6/132683181/zakesanulop.pdfIn PDF document text
    • http://files.7mountainschurch.com/uploads/1/3/1/6/131637104/3237166.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/134ac807-a76a-4cd1-8622-1939c0de2818/69148512370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/068e57a3-23e1-4ebd-b2d0-f6bcf574719c/pugumopedisivuxatemuxuran.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d88cdf7-c4e6-44cb-bd9b-10aa5d015d82/damurinuvukipuradefas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5f48a50-01ff-49df-9508-a5685e61fa4f/89875617603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/nba_live_mobile_hacked_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/razapusatedafiwanex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7372/6374/files/laxigenezogugamopegedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4733/8403/files/vietnam_war_dsst_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9307/7405/files/vedefod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a526371-08c8-4bac-9018-3cc8b636bef2/77266407702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb319844-1bee-4cdd-8f24-535fb5a4462b/jomafufolivade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94adcda7-d1f8-40c6-a2e5-d3dee09c0b33/45066707588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0661fd-67bb-4613-b640-f0b0fbc71b97/tasinasapafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd4af8b-2c0f-4786-8c64-ea04c2061f84/ruzetabudefasonukitutebol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFC 5196 bytes
SHA-256: 129a3a8155094d280ea16c883d01ae7c0cfc558ad0c4cd280a99b0c9d739d07a
font_01_sfnt_off00005c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C95 9828 bytes
SHA-256: 1fa2a0a301fbdbac697b279388ab74da9c781ec1b9cf0277aafe2f917e725740

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